Rating: 
Summary: Not Too Bad, Not Too Good
Review: I got this item for a price that would have been a little over the top for a GOOD pair of headphones. The sound quality was good, and you can always expect that from a Koss quality headphone, but the only downside to this is that the durability is not too great. Mine started breaking after only 3 and a half months. However, i would highly recommend that everyone should buy the Koss TD - 61 because it is one of the greatest headphones that i have come across. Yes, it is on amazon and you can go to the headphone section and click on Average Customer Rating. What surprizes me is that it was actually less expensive than the Koss TD - 10, and it only has much better quality and durability. I wouldn't recommend this product to anyone who would take it for jogging or running, but what can i say, it is a STEREOPHONE. In conclusion, do not buy this product if you want the best in quality (there are better headphones and prices out there!).
Rating: 
Summary: Great Headphones, Great sound at a Great Price!
Review: A while back, I was in the market for a New set of headphones, because my old Koss headphones were warn out. I knew from the old set of Koss headphones that Koss was A GREAT brand. So I checked out all my options, and decided on the R-200's. I soon recieved them, and I LOVE them.Ok, they may not be the best you can get, but for the money you cannot beat them. They fit very comfortably, and Sound GREAT. They deliver Good trebel, and ear busting Bass. They are well designed! In conclusion: if you have an unlimited budget, you might find better headphones, but If you are like the rest of us, and you just want a very good set of headphones for a reasonable price, you want The KOSS R-200's.
--This text refers to
the R-200 option.
Rating:
Summary: Best headphones ever...so far.
Review: First off, these are extremely well built. I got these headphones for christmas about 3 years ago and they've been used by all my family, and because of that hung from the cord, dropped onto wood and concrete floors, all that countless times. I love the sound of them. Ive used them for DJing, remixing, with my iPod, on my computer, and they're very comfortable and affordable. The bass on these headphones is awesome. Once to remix I used my sister's new Sony MDR-V700DJ's that I thought would be better because they were so much expensive, they actually didn't sound much better. There was no bass, and the speakers were too small. They only covered some of my ear, which I did not like, while these cover my ears-and a little more-to "trap" the sound. i've been using these headphones since I was using Acid XPress almost 3 years ago to now, where I use a mixing board, turntables, Acid Pro, FLStudio 4, you get the idea.
--This text refers to
the UR-20 option.
Rating:
Summary: Fantastic
Review: This is a fantastic headphone for the price. It is kinda bulky, but hey I bought it for home use so no problem. The sound is terrific. Very clear and good bass. The coiled cord does not get entangled with your hand. A good buy if you want to use it in home.
--This text refers to
the R-80 option.
Rating:
Summary: I keep coming back!!!
Review: I just purchased my third pair of these headphones because they keep breaking at a rate of about one pair per year after the rough treatment they get in my college dorm. Don't get the wrong idea though, they break because they get knocked off my desk and onto the hard floor at least once per day, and they still last a year or so! The sound quality can't be beat either. I used to buy nothing but Sony headphones, but they just sound hollow after listening to these. You will be hard pressed to find a pair of headphones with such great sound quality (and amazing bass!) at such a low price. They can be moderately uncomfortable at first, but give them a day or two and they stretch out to a nice fit.
Rating:
Summary: Decent sound, flimsy construction
Review: The plastic track on which the earpieces ride broke within a month of my purchase. The sound quality is decent for the price, but the construction could really use some work. Koss offered to replace it under the warranty without giving me any trouble, but it's not worth paying the shipping charges both ways plus the $7 warranty repair fee.
--This text refers to
the UR-20 option.
Rating:
Summary: I was not very impressed with the sound quality
Review: I was not very impressed with the sound quality of these phones. I was using a set of HP-X222 Aiwa phones the day before I bought these, and when I got these UR-20's I thought that the sound was so flat and lifeless compared to the Aiwas that I returned them the next day. It was like the difference between night and day. Granted, the Aiwas run for an additional $20 or so. PROS:
*Low cost
* Quite comfortable CONS:
* A lot of distortion: If you look up the specs on these phones they are rated at <.3%THD which isn't too great. I experienced a lot of distortion with these phones
* Flat and lifeless sound: Compared to the other sets I listened to, it sounded like I was playing music through a telephone receiver. Very thin and unexciting. I guess if you bear in mind that you generally get what you pay for, these aren't a bad set of headphones, but if you are looking for music to ring and you want to hear things in music you haven't heard before, I would suggest laying the money down and getting a good set. My expectations may have been too high for the price.
--This text refers to
the UR-20 option.
Rating:
Summary: Nice. Very Nice.
Review: I'm no audio expert, but these are the best headphones I've ever owned, and I've been through a couple of pairs in this general price range. I've found these to be very helpful in my noisy office enviroment. They produce sound so clear and eliminate outside noise so well, that I'll occasionally slip them off for a second, just to make sure they're not loud enough to disturb my officemates (which they never are). Strongly recommended.
Rating: 
Summary: Good Enough that I bought 2 more
Review: Had only 1 problem, the left speaker attachment broke after 2 mos. My Fault(Super Glued and it worked). Have been a Koss fan since 1976.
--This text refers to
the R-80 option.
Rating:
Summary: Good first pair
Review: This is the first pair of large headphones i have ever had all my other headphones were earbuds and earclips boy did these blow them out of the water and their cheap im no audiophile but these have awesome bass. mi brother has a pair of Gemini HP550 headphones and these blew them out of the water get these because they have good sound their comfortable and they have a nice long 8 foot cord.
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